In your quest for the best business laptop, you're inevitably going to consider a Windows machine, and you would be totally right in doing so.
For a little over £300 you can pick up a perfectly serviceable, no-frills notebook that will run all Windows software and connect to the web. While this sort of machine does what you need it to, it probably won't be the sleekest device out there. Potential downsides include weight and heft, and cheaper laptops don't tend to have great battery life.
Windows laptops come in all shapes and sizes and range in price massively, and we'll come to budget laptops later.
For those wanting to splash a bit more cash on a capable machine, the Dell XPS 15 - starting around £1,350 - is an excellent laptop with a superb screen resolution, good battery power, 8GB of RAM and for storage, a 32GB SSD and a 1TB hard drive. It also sports a Intel Core i5 HQ-series CPU, and an Nvidia GTX 1050 graphics card.
Another one to consider is Microsoft's own Surface Laptop, which depending on the model, could set you back anywhere from £979 to £2,149. Its cheapest model houses the Intel Core i5 processor, 4GB of RAM, and a 128GB SSD, while its top-end laptop comes with the Intel Core i7, 16GB of RAM and a 512GB SSD.